Why would someone even start with changing the coils...usually a misfire is due to bad spark plugs..replace spark plugs, then go from there...just for a personal reference, the next time you want to see if your coils are bad, simply change out your bad two coils with two coils on the other side of the engine that are good...if they misfire code changes, then you know its a coil...if not, plugs...

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CarGurusMay 27, 2009 - #4 misfire new plugs and coil pack on #4 light came back on after 300 miles if ... How come it stopped misfiring for 2-3 months, and now is back? ... I have a 2005 Jeep Liberty 6 cylinder, engine light came on scaned the codes ...

hi , if you are sure the no. 6 cylinder is misfire then change the ignition coil if you are sure but if you are going to buy a new coil better buy all 6 coils and it will last longer if not after no.6 then no.5 or 4,3, until you change all of it .....for rough runs pls flush / change ATF every 20,000 km and change engine oil every 5,000 km , change the exhaust (o2) sensor it make a lot of different , resetting your throttle sensor and speed sensor , all the above must change it with nissan oem part and it not that expensive too.

misfire spark plugs coils wires did you wash engine water gets in under the intake to the plugs first if with a scanner check codes p0300 change plugs p0301 or 2 or 3 or 4 its one of the cylinders i would try just changing all the plugs first and start from there

Whats the code u are getting, and what did u tried so far Let me know if u still need help . First thing u need to try is take all spark plug wires out and inspect if they are ok take ignition coil out check that for cracks , if there is no cracks check coil with multi meter for ohms primary and secondry ohms let me know if u have not checked that i can tell u how to do it if dont know

On most Honda's when you get a misfire happening across the whole engine like that there are a few likely issues. the ignition coil if it's a single coil style or the connector at the distributor. They also have some issues with EGR's and plugged ports which can mess with the fuel trim numbers. It's important to check the fuel pressure and if possible a timing offset spec from the scanner whenever you're dealing with misfires on any vehicles Honda or not and determine correct pressure and flow whenever possible.

P0304 Cylinder 4 Misfire Detected P0354 Ignition Coil 4 Control Circuit P0204 Injector 4 Control Circuit You need to check injetror wires an coil wires .If good, The new coil my not be good.The Injector my be bad. If good it the ECM Check all fuses.